Clamping device.



c.- R. comm.

CLAMPING DEVICE.

APPLICATION FILED DEC. 15. l9l6- RENEWED FEB. 5, 1918.

Patented Mar. 5, 1918.

my :5 w w T :T FA

a citizen of the United States,

.'. Ka-nsas City,

.BLE or V CLIFFORD n. CONNER, or KANSAS CITY, MISSOURI, ASSIGNOR'OF, ONE-HALF 'r CHARLES A. srnmnnon, OFYKANSAS CITY, MIssoUnI. 4

cLAMrInG DEVICE.

Specification ,0: Letters Patent.

Patented. Mars 5, 1918.

Application filed December 15, 1916, Serial .No. 137.213. Renewed February 5, 1918. Serial No. 215,559.

1/ '0 all whom it may concern:

Be it known that I, CLIFFORD R. CONNER, residing at in the county of Jackson and State of Missouri, have invented certain new anduseful Improvements in Clamping DewVlCeS; and I do declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which it appertains to make and nsevthe same, reference being had to the ac com an in" drawin s and to the letters and p b D 7 figures of reference marked thereon, which form a part of this specification.

invention relates to clamping devices rand more, particularly to an adjustable clamp adapted to facilitate the assembling a of inclosing members about planetary trans-' mission mechanism, such as is ordinarily used in automobile construction, the prini cipal 0b]9Ci, of the invention being to provide; means whereby the transmission bands and parts thereon may be held 'alinement relative to. parts on the interior of the inclosing members, so that {latter are placed in position,

when the the parts carried thereby and parts on the, transmission 1- pmvidsmeans for bands will cooperate to perform their function. I

It is also an object of the invention to quickly adjusting and o looking the clamp at a desired width and to provide the parts with graduations, so that .the"dev1ce may be used conveniently for calipering purposes,

.- In accomplishing these objects, I have provided improved preferred forms details of structure, the of'which are illustrated in they accompanying drawings, wherein v Figure I is a detail perspective view of a transmission mechanism illustrating the function of a clamp embodying the present invention; the cover base being broken away to show parts mounted therein.

Fig. II is a detail perspective view of the clamp.

Fig. III is a perspective view of one of the clamp members.

Fig. IV is a. detail perspective view of the opposite coiiperating member.

Fig. V is a transverse section on line VV,- F ig. II showing the clamp locking nut. 1

in proper of the transmission,

Referring more in detail to the draw ing'sz 1 designates an automobile transmission mechanism, commonly known as the plan-'- comprising a. lower or base portion 5, and a cover portion 6, having apertured flange portions 7-7 for receiving bolts 8, whereby the casing members may be locked together about the transmission parts.

Surrounding the drums 2 are transrnlssion bands 9, the opposite ends of which termiwith laterally extended ears 10 having outwardly opening sockets 11 therein for seating the band tensioning rods 12 which are mounted within and extend outWardl from the cover 6 and are provided with pedals 13 ate in spaced relation and are provided whereby they may be actuated to tightenthe bands 9 about their respective drums, to re tar d the motion of the latter.

lnclosing the rods 12am springs 14 which are adapted, when in position, to seat between and to bearagainst the upturned ends of the hand cars 10 to urge the same outwardly to remove friction from the drums. with the assembling of To those -familiar these partsit is known that it is necessary. before the cover 6 is placed in position, to adjust the band members to a proper alinement and secure them by some means in this adjusted position or ditliculty will be experienced in bringing the cover 6 and parts carried therein into registering positions.

I In assembling the parts it tice before the cover 6 is placed to tie the bands in position with string, and later after the cover is in position'to remove the string, butthis method requires considerable time, and proper adju'stmentis not easily acquired.

In order to eliminate this difiiculty of acquiring a proper adjustment and alinepreferred construction is common pracing base portions lZ l'l, provided with outwardly extending parallel arms 18-18 respectively; the base plate 17 being provided on one face with longitudinally'ew tending dove tail groove 20 which is adapted to slidably receive the dove tailed base plate 17 of the opposite clamp member, so that the two clamp arms 18- 48 may be moved toward or away from each other.

in order to permit the clamp arms to be brought flush together 1 provide the end of the base plate 17 carrying the arm 18 with an upward offset 22 which raises the arm 18 clear of the base 17 and then give the arm 18' a downward offset 23 adjacent its base to bring the two arms 18-18 in the same horizontal'plan so that when moved I to their inner limit their adjacent ledges will seat flush together. As a means of holding the clamp armsin an adjusted. position I provide a set screw 25 having a threaded shank 26 which ex.- tendsthrough the base 17 and is swiveled therein. Threaded onto the shank 26 is a nut 28 that seats in a socket 29 in the base 17 adjacent tothe groove and has a flat edge surface 30 adapted to engage the beveled edge of the base 17 and which may betigliltened thereagainstto lock the slidably connected base plates in an adjusted posimade from the inner edge of arm 18 when the arms are moved apart after being closed against each other, and the graduations on the plate 17 running in the opposite directhan and continuing from those on the first plate, so that they may be read from the end of the plate 17' when the arms have been spread to carry the free end of plate 15" inwardly or the edge of arm 18.

The cover portion 6 is then seated over reassess the mechanism so that the tensioning rods 12 seat in the ear sockets l1 and the springs 13 bear against the inner face of the band ears.

After the cover has been properly seated and secured in position andthetension rods adjusted, the clamp is removed through the top opening 450 of the cover.

It is apparent that with a device of this character, the transmission bands may be held in alinement While the parts are being assembled and when the cover has been bolted in position and proper adjustment has beenmade, the clamp may be removed therefrom to release the bands.

It, is also apparent that by providing the graduated surface, the device may be used to a good advantage as a ,calipering instrument.

' Having thus described my invention, What I' claim as new therein and desire to secure by Letters-Patent, is

1. A tool of the character describe-d comprising a pair of base members, each having a laterally directed arm and one having a dovetailed groove in its face, the other base member being dovetailed to slide in said groove, the first base member having a socket opening to said groove, a threaded shank carried by the first base member and extending through the socket, a clamp member threaded on, the shank and fitting the socket and the dovetailed edge of the second base member and a handle portion on said shank whereby the clamp membermay be adjusted to loosen or fix the dovetailed base member substantially as set forth.

2. A tool of the character described, com prising a pair of base members, one having a longitudinal groove along one face and the opposite member being dovetailed to slidably seat in said groove, each member having an arm at its outer end extending parallel with a like arm on the other plate, the end of one plate being outset at the base of its arm and the said arm being downset to permit-said arm to move along the outer plate and abut agalnst the arm thereon.

In testimony whereof I afiix my signature.

cmrronn neonnnn. 

